Siemens 3LD2418-0TK13 3-Pole Main & EMERGENCY STOP Switch, 250 A, Red/Yellow

Industrial power distribution demands a switch that can handle high currents, provide reliable isolation, and serve as an emergency stop when safety is critical. The Siemens 3LD2418-0TK13 is a 3-pole main and EMERGENCY STOP switch rated for 250 A operational current, built for front-mounted rotary operation with a red/yellow handle for clear status indication.

Who is it for

This switch is intended for panel builders, machine OEMs, and maintenance teams who need a robust disconnect switch for motor control centers, distribution boards, or machinery where emergency stopping and maintenance isolation are required. It suits applications up to 690 V AC and 132 kW at 400 V AC (AC-23A).

Main features

• Rated operational current 250 A, 3-pole
• Rated operational voltage 690 V AC
• Red/yellow rotary handle, front-mounted
• Switch functions: main switch, EMERGENCY STOP switch, maintenance switch
• Box terminals accept solid or stranded conductors 50–120 mm²
• High mechanical endurance: 100,000 operating cycles
• Electrical endurance: 10,000 operating cycles
• Degree of protection IP65 on front

Specifications

• Rated insulation voltage (Ui): 690 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Rated short-time withstand current (Icw): 4 kA for 1 s
• Rated power at AC-23A, 400 V: 132 kW
• AC frequency: 50/60 Hz
• Ambient operating temperature: -25 to +55 °C
• Dimensions (W x D x H): 112 x 94 x 169 mm
• Standards: IEC 60947-3

Tips

Ensure the conductor size matches the terminal capacity (50–120 mm²) to maintain reliable connections. For emergency stop applications, verify compliance with local safety regulations regarding handle color and latching mechanism.